Partager

Document IIF

Développement d'un nouveau meuble de vente commercial multi-température à plusieurs capillaires muni d'un réservoir commun.

Development of a novel multi-capillary, multi-temperature commercial refrigerator cabinet with common low-pressure receiver.

Auteurs : EVANS J., HAMMOND E., GIGIEL A.

Type d'article : Article, Article de la RIF

Résumé

A multi-temperature 4 drawer catering cabinet was designed to operate using a low-pressure receiver with capillary expansion to the separate evaporator in each drawer. Low-pressure receivers have been shown to be an effective way of allowing evaporators to operate in a fully flooded mode thus enabling more efficient use of the evaporator surface for heat transfer. If a low-pressure receiver is used in a refrigeration circuit the control of refrigerant flow into the evaporator is less critical as the expansion device is not responsible for preventing liquid returning to the compressor. Therefore, a capillary expansion device can be used effectively over a range of operating pressures. The system was shown to be effective at maintaining temperatures in the storage drawers during chilled, frozen and mixed storage temperature tests carried out to the EN441 test standard. The cabinet operated successfully at all conditions except when the heat load in each drawer was excessive (>400 W above base level heat load). In this case, refrigerant was found to back up in the condenser and the low-pressure receiver was empty of liquid refrigerant. A solution to this would be to allow controlled flow of refrigerant from the condenser to the low-pressure receiver at high condensing pressures.

Documents disponibles

Format PDF

Pages : 464-471

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Development of a novel multi-capillary, multi-temperature commercial refrigerator cabinet with common low-pressure receiver.
  • Identifiant de la fiche : 2008-0679
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 31 - n. 3
  • Date d'édition : 05/2008

Liens


Voir d'autres articles du même numéro (18)
Voir la source

Indexation